The　effect　of　cohesive　particles　on　the　pressure　fluctuations　was　experimentally　investigated　in　a　binary　gas-solid　fluidized　bed.　The　pressure　fluctuation　signals　were　measured　by　differential　pressure　sensors　under　conditions　of　various　weight　percentages　of　cohesive　particles.　The　cohesive　particles　increased　the　fixed　bed　pressure　drop　per　unit　height　and　decreased　the　minimum　fluidization　velocity.　The　Wen　&　Yu　equation　well　predicts　the　minimum　fluidization　velocity　of　the　binary　system.　The　addition　of　cohesive　particles　slightly　decreased　the　bubble　size　in　bubbling　flow　regime　when　the　cohesive　particles　and　the　coarse　particles　mixed　well,　while　the　bubble　size　greatly　decreased　when　the　cohesive　particles　agglomerated　on　the　bed　surface.　The　time　series　of　pressure　fluctuations　was　analyzed　by　using　the　methods　of　time　domain,　frequency　domain　and　wavelet　transformation.　The　normalized　standard　deviation　of　pressure　fluctuations　decreased　with　increasing　weight　percentages　of　cohesive　particles.　A　wide　bandwidth　frequency　of　0　to　1Hz　got　narrower　with　a　single　peak　around　0.6Hz　with　an　increase　in　proportion　of　the　cohesive　particles.　The　meso-energy　and　micro-energy　of　pressure　fluctuations　were　decreasing　with　increasing　cohesive　particles　proportions,　which　indicated　that　adding　cohesive　particles　could　reduce　the　energy　dissipation　of　bubble　and　particle　fluctuations.